JP2012029785A - Radiological image radiographing method and apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve radiographing efficiency while reducing a burden on a subject.SOLUTION: A radiological image radiographing method for irradiating a subject with radiation from a plurality of mutually different radiographing directions by moving a radiation source and capturing radiological images in every radiographing direction by the irradiation of radiation includes acquiring images by a modality for acquiring images on biological information of the subject other than the radiological images during the movement of the radiation source from a predetermined radiographing direction to the next radiographing direction.

Description

  The present invention relates to a radiographic imaging method and apparatus for irradiating a subject from a plurality of different imaging directions by moving a radiation source and capturing radiographic images for each imaging direction by irradiation of the radiation.

  Conventionally, an imaging method using radiation has been used in various fields, and particularly in the medical field, it has become one of the most important means for diagnosis. Radiation images obtained by breast radiography performed to diagnose breast cancer are useful for finding calcifications, which are precursors to masses and cancers, but may be detected depending on the breast density of the subject. May be difficult. Therefore, it has been studied to make a diagnosis based on both a radiographic image and an ultrasonic image by using radiation and ultrasonic waves in combination. Each of radiography and ultrasonic imaging has the following characteristics.

  Radiography is suitable for capturing calcification, which is one of the initial symptoms of cancer, and can be detected with high resolution and high sensitivity. In particular, in the case of fat (so-called “fat breast”) in which mammary gland tissue begins to atrophy and is replaced with fat like a post-menopausal woman, information obtained by radiography increases. However, radiography has the disadvantage that the ability to detect tissue specificity (tissue properties) is low.

  In the radiographic image, since the mammary gland exhibits a uniform soft tissue concentration, in the case of the mammary gland in which the mammary gland is developing (so-called “dense breast”) as in adolescent to premenopausal women, Detection of a tumor becomes difficult. Furthermore, in radiography, since only a two-dimensional image obtained by projecting a subject onto a plane can be obtained, even if a tumor is discovered, information such as the position and size of the tumor in the depth direction can be grasped. Is difficult.

  On the other hand, ultrasonic imaging can detect tissue specificity (for example, the difference between a cyst and a solid substance) and can also detect lobular cancer. It is also possible to observe an image in real time and generate a three-dimensional image. However, the accuracy of the ultrasonic imaging inspection often depends on the technique of an operator such as a doctor, and the reproducibility is low. In addition, it is difficult to observe minute calcification in an ultrasonic image.

  Thus, since radiography and ultrasound imaging have merits and demerits, it is desirable to perform both examinations in order to reliably detect breast cancer. Since radiography is performed in a state in which the subject (breast) is compressed with a compression plate, in order to make a diagnosis based on a radiographic image and an ultrasonic image of the subject in the same state, ultrasonic imaging is also performed using radiation. It is necessary to perform in the same state as when imaging was performed, that is, in a state where the subject (breast) is compressed by the compression plate. For this purpose, a medical imaging apparatus that performs imaging of the mammary gland and breast using radiation and ultrasound in combination has been studied (for example, see Patent Document 1).

  On the other hand, conventionally, it is known that stereoscopic display can be performed using parallax by displaying a combination of a plurality of images. Such a stereoscopically viewable image (hereinafter referred to as a stereoscopic image or a stereo image) is generated based on a plurality of images having parallax obtained by photographing the same subject from different directions.

  Such generation of stereoscopic images is used not only in the fields of digital cameras and televisions but also in the field of radiographic imaging. That is, the patient is irradiated with radiation from different directions, the radiation transmitted through the subject is detected by a radiation image detector, and a plurality of radiation images having parallax are obtained, and these radiations are acquired. A stereoscopic image is generated based on the image. And by generating a stereoscopic image in this way, a radiographic image with a sense of depth can be observed, and a radiographic image more suitable for diagnosis can be observed.

Japanese National Patent Publication No. 9-504 211

  Here, as described above, when radiographic imaging and ultrasonic imaging are performed in combination, it is necessary to perform imaging in the same state, and thus it is necessary to perform both imaging while the breast is compressed by the compression plate. .

  On the other hand, since the above-described apparatus for capturing a stereoscopic image needs to capture a plurality of radiation images by irradiating radiation from different imaging directions, the radiation source is moved to capture each radiation image. It is necessary to let

  Therefore, when both such stereoscopic image capturing and ultrasonic image capturing are performed, the time during which the breast is compressed becomes very long, and the burden on the subject increases. In addition, the overall photographing time becomes long, and the photographing efficiency is deteriorated.

  In view of the above circumstances, an object of the present invention is to provide a radiation imaging method and apparatus capable of reducing the burden on the subject and improving the imaging efficiency.

  The radiographic imaging method of the present invention is a radiographic imaging method in which a subject is irradiated with radiation from a plurality of different imaging directions by moving a radiation source, and a radiographic image for each imaging direction is captured by irradiation of radiation. An image is acquired by a modality for acquiring an image related to biological information of a subject other than a radiographic image before the source moves from a predetermined imaging direction to the next imaging direction.

  The radiographic imaging device of the present invention detects a radiation image for each imaging direction by irradiating a subject from a plurality of different imaging directions by moving a radiation source, and radiation by the radiation irradiation unit. In a radiographic imaging device including a radiographic image detector, a modality for acquiring an image related to biological information of a subject other than a radiographic image and a period from when a radiation source moves from a predetermined imaging direction to the next imaging direction. And a control unit that controls the modality so as to acquire an image.

  In the radiographic image capturing apparatus of the present invention, the modality can be a tomographic image of a subject.

  In addition, the modality can acquire an ultrasonic image of a subject by irradiating the subject with ultrasonic waves.

  Further, the modality can include an ultrasonic probe that irradiates the subject with ultrasonic waves and a scanning mechanism that scans the ultrasonic probes in a predetermined direction.

  In addition, a scanning range determination unit that determines the scanning range of the ultrasonic probe by the scanning mechanism based on a radiographic image captured by irradiating the subject with radiation from a predetermined imaging direction can be provided.

  A scanning range determining unit that accepts designation of a predetermined range in a radiographic image captured by irradiating a subject from a predetermined imaging direction and determines the range as a scanning range of an ultrasonic probe by a scanning mechanism; Can be provided.

  Further, the scanning mechanism can scan the ultrasonic probe in the same direction as the moving direction of the radiation source.

  Further, a modality can be obtained that obtains a tomographic image having a tomographic plane in a direction orthogonal to the moving direction of the radiation source.

  Further, the radiation irradiating unit can irradiate the subject with radiation from the imaging direction in which a plurality of radiographic images constituting the stereoscopic image are captured.

  The subject may be a breast, and the radiation image detector may detect a breast image of the subject.

  According to the radiation imaging method and apparatus of the present invention, an image is acquired by a modality for acquiring an image related to biological information of a subject other than a radiation image before the radiation source moves from a predetermined imaging direction to the next imaging direction. For example, compared with the case of acquiring images with other modalities before and after capturing a plurality of radiographic images, the overall imaging time can be shortened, and the subject Can be reduced, and the shooting efficiency can be improved.

1 is a schematic configuration diagram of a breast image photographing display system using an embodiment of a radiation imaging apparatus of the present invention. The figure which looked at the arm part of the mammography display system shown in FIG. 1 from the right direction of FIG. The figure which shows the schematic block diagram of a probe scanning mechanism. 1 is a block diagram showing a schematic configuration inside a computer of the breast image capturing and displaying system shown in FIG. Diagram for explaining how to identify areas with high breast density The flowchart for demonstrating the effect | action of the mammography imaging display system using one Embodiment of the radiography apparatus of this invention.

  Hereinafter, a breast image radiographing display system using an embodiment of a radiographic image radiographing apparatus of the present invention will be described with reference to the drawings. FIG. 1 is a diagram showing a schematic configuration of the entire breast image photographing display system of the present embodiment.

  As shown in FIG. 1, a breast image capturing and displaying system 1 according to the present embodiment includes a breast image capturing apparatus 10, a computer 2 connected to the breast image capturing apparatus 10, a monitor 3 connected to the computer 2, and an input unit. 4 is provided.

  As shown in FIG. 1, the mammography apparatus 10 includes a base 11, a rotary shaft 12 that can move in the vertical direction (Z direction) with respect to the base 11, and can rotate. The arm part 13 connected with the base 11 is provided. FIG. 2 shows the arm 13 viewed from the right direction in FIG.

  The arm portion 13 has an alphabet C shape, and a radiation table 16 is attached to one end of the arm portion 13 so as to face the imaging table 14 at the other end. The rotation and vertical movement of the arm unit 13 are controlled by an arm controller 31 incorporated in the base 11.

  A radiographic image detector 15 such as a flat panel detector and a detector controller 33 that controls reading of a charge signal from the radiographic image detector 15 are provided inside the imaging table 14. Further, inside the imaging table 14, a charge amplifier that converts the charge signal read from the radiation image detector 15 into a voltage signal, a correlated double sampling circuit that samples the voltage signal output from the charge amplifier, A circuit board provided with an AD conversion unit for converting a voltage signal into a digital signal is also installed.

  In addition, the photographing table 14 is configured to be rotatable with respect to the arm unit 13, and even when the arm unit 13 rotates with respect to the base 11, the direction of the photographing table 14 is fixed to the base 11. can do.

  The radiation image detector 15 can repeatedly perform recording and reading of a radiation image, and may use a so-called direct type radiation image detector that directly receives radiation and generates charges. Alternatively, a so-called indirect radiation image detector that converts radiation once into visible light and converts the visible light into a charge signal may be used. As a radiation image signal reading method, a radiation image signal is read by turning on / off a TFT (thin film transistor) switch, or by irradiating reading light. It is desirable to use a so-called optical readout system from which a radiation image signal is read out, but the present invention is not limited to this, and other systems may be used.

  A radiation source 17 and a radiation source controller 32 are housed in the radiation irradiation unit 16. The radiation source controller 32 controls the timing of irradiating radiation from the radiation source 17 and the radiation generation conditions (tube current, time, tube current time product, etc.) in the radiation source 17.

  Further, in the central portion of the arm portion 13, a compression plate 18 disposed above the imaging table 14 to press and compress the breast, a support portion 20 that supports the compression plate 18, and a support portion 20 in the vertical direction ( A moving mechanism 19 for moving in the Z direction) is provided. The position of the compression plate 18 and the compression pressure are controlled by the compression plate controller 34.

  The compression plate 18 is composed of an optically transparent member for performing alignment and compression state confirmation when compressing the breast. The compression plate 18 transmits the radiation emitted from the radiation source 17 and is described later. It is desirable that the ultrasonic wave transmitted from the acoustic probe 21 is made of a material that can easily propagate. As the material of the compression plate 18, for example, a resin such as polycarbonate, acrylic, or polymethylpentene having a suitable value in the acoustic impedance that affects the reflectance of the ultrasonic wave and the attenuation coefficient that affects the attenuation of the ultrasonic wave is used. Can be used.

  An ultrasonic probe 21 that moves along the upper surface of the compression plate 18 is supported by the probe scanning mechanism 23 above the compression plate 18.

  The ultrasonic probe 21 includes a plurality of ultrasonic transducers arranged one-dimensionally or two-dimensionally. Each ultrasonic transducer transmits an ultrasonic wave according to an applied drive signal, receives an ultrasonic echo, and outputs a received signal.

  Each ultrasonic transducer is, for example, a piezoelectric ceramic represented by PZT (Pb (lead) zirconate titanate), a polymer piezoelectric element represented by PVDF (polyvinylidene difluoride), or the like. It is comprised by the vibrator | oscillator which formed the electrode at the both ends of the material (piezoelectric body) which has the piezoelectricity. When a pulsed or continuous wave voltage is applied to the electrodes of such a vibrator, the piezoelectric body expands and contracts. By this expansion and contraction, pulsed or continuous wave ultrasonic waves are generated from the respective vibrators, and an ultrasonic beam is formed by synthesizing those ultrasonic waves. Each vibrator expands and contracts by receiving propagating ultrasonic waves and generates an electrical signal. Those electric signals are output as ultrasonic reception signals and input to the computer 2 via a cable.

  FIG. 3 shows a schematic configuration diagram of the probe scanning mechanism 23. The probe scanning mechanism 23 includes a first moving member 23a that can move in the Z-axis direction, a second moving member 23b that can move in the Y-axis direction with respect to the first moving member 23a, and a second moving member. And a third moving member 23c movable in the X-axis direction with respect to 23b. These moving members are driven by a stepping motor or the like under the control of the probe controller 35 shown in FIG.

  The computer 2 includes a central processing unit (CPU) and a storage device such as a semiconductor memory, a hard disk, and an SSD, and the control unit 8a, the radiographic image storage unit 8b, the super image unit shown in FIG. A sonic imaging control unit 8c, a scanning range determination unit 8d, and a display control unit 8e are configured.

  The controller 8a outputs predetermined control signals to the various controllers 31 to 35 to control the entire system. A specific control method will be described in detail later.

  The radiation image storage unit 8b stores two radiation image signals acquired by the radiation image detector 15 in advance.

  The ultrasonic imaging control unit 8c includes a transmission circuit, a reception circuit, an A / D converter, a signal processing unit, and the like.

  The transmission circuit generates a plurality of drive signals respectively applied to the plurality of ultrasonic transducers based on a predetermined transmission delay pattern, and supplies the drive signals to the ultrasonic probe 21.

  The reception circuit amplifies a plurality of ultrasonic reception signals respectively output from the plurality of ultrasonic transducers, and the A / D converter converts the analog ultrasonic reception signal amplified by the reception circuit into a digital ultrasonic reception signal. It is to convert to.

  The signal processing unit gives a delay time to each of the plurality of ultrasonic reception signals based on a predetermined reception delay pattern, adds the ultrasonic reception signals, performs reception focus processing, and performs predetermined processing. To generate an ultrasonic image signal.

  The scanning range determination unit 8d determines the scanning range of the ultrasonic probe 21 by the probe scanning mechanism 23 based on the first radiological image signal acquired from the two radiographic image signals stored in the radiographic image storage unit 8b. To decide. Specifically, for example, imaging with an ultrasonic probe is effective because it is difficult to detect calcification in a region where the density of the mammary gland in the radiographic image signal of the breast is high. Therefore, the scanning range determination unit 8d specifies a range where the breast density is high in the radiographic image signal, and determines that range as the scanning range of the ultrasonic probe 21.

  Specifically, for example, a portion having a high mammary gland density is displayed in white on a radiographic image, and therefore, a range having a high mammary gland density can be specified by specifying the white portion. As a method for specifying the white portion, for example, a radiographic image is displayed on the monitor 3 based on the radiographic image signal acquired first, and the photographer moves the input unit 4 on the displayed radiographic image. The scanning range determination unit 8d may select a white portion and acquire information on the selected range, or the scanning range determination unit 8d may perform image recognition based on the radiographic image signal. A white portion may be automatically detected.

  More specifically, for example, as shown in FIG. 5, the radiographic image is divided into a plurality of regions of a predetermined size (12 in FIG. 5), and the photographer selects a whiter region or scans the region. The range determination unit 8d may acquire the average value of the pixel values of each region and detect a region (white) having the smallest average value. At this time, the region division method (size) may be determined based on the time during which the ultrasonic probe 21 can be scanned, the size of the ultrasonic probe 21, and the like.

  In the present embodiment, as described above, the range in which the mammary gland density is high is determined as the scanning range. However, the present invention is not limited to this. The region of interest may be determined as the scanning range.

  Further, as described above, the region of interest may not necessarily be automatically determined by analyzing the radiographic image signal. For example, the radiographic image based on the first radiographic image signal is displayed on the monitor 3 and displayed. The observer may specify a predetermined region of interest using the input unit 4 while observing the radiation image.

  The display control unit 8e performs a predetermined process on the two radiographic image signals read from the radiographic image storage unit 8b, and then displays a stereo image of the breast on the monitor 3 and ultrasonic waves. A predetermined process is performed on the ultrasonic image signal generated in the imaging control unit 8c, and then an ultrasonic tomographic image of the breast is displayed on the monitor 3.

  The input unit 4 is composed of a pointing device such as a keyboard and a mouse, for example, and accepts input of shooting conditions and shooting start instructions by a photographer.

  The monitor 3 is configured to be able to display a stereo image using two radiation image signals output from the computer 2 at the time of capturing a stereo image. As a configuration for displaying a stereo image, for example, a radiographic image based on two radiographic image signals is displayed using two screens, and one of the radiographic images is observed by using a half mirror or a polarizing glass. It is possible to adopt a configuration in which a stereo image is displayed by being incident on the right eye of the observer and the other radiation image is incident on the left eye of the observer. Or, for example, two radiographic images may be displayed in a superimposed manner while being shifted by a predetermined amount of parallax, and this may be configured to generate a stereo image by observing with a polarizing glass, or a parallax barrier method and a lenticular method As described above, a stereo image may be generated by displaying two radiation images on a stereoscopically viewable 3D liquid crystal.

  Note that a monitor that displays a stereo image and a monitor that displays an ultrasonic image may be provided separately, or the same one may be used.

  Next, the operation of the breast image radiographing display system of this embodiment will be described with reference to the flowchart shown in FIG.

  First, the patient's breast M is placed on the imaging table 14, and the breast M is compressed with a predetermined pressure by the compression plate 18 (S10).

  Next, in the input unit 4, after various shooting conditions are input by the photographer, an instruction to start shooting is input.

  Then, when there is an instruction to start imaging at the input unit 4, the first radiographic image of the two radiographic images constituting the stereo image of the breast M is captured (S12). Specifically, first, the control unit 8 a reads a convergence angle θ for capturing a preset stereo image, and outputs information on the read convergence angle θ to the arm controller 31. In this embodiment, θ = ± 2 ° is stored in advance as information on the convergence angle θ at this time. However, the present invention is not limited to this, and an arbitrary convergence angle is set by the photographer in the input unit 4. It can be set.

  Then, the arm controller 31 receives the information on the convergence angle θ output from the control unit 8a. The arm controller 31 captures the image of the arm unit 13 based on the information on the convergence angle θ as shown in FIG. A control signal is output so as to rotate + θ ° with respect to a direction perpendicular to the table 14. That is, in the present embodiment, a control signal is output so that the arm unit 13 is rotated + 2 ° with respect to a direction perpendicular to the imaging table 14.

  Then, according to the control signal output from the arm controller 31, the arm portion 13 rotates by + 2 °. Subsequently, the control unit 8a outputs a control signal to the radiation source controller 32 and the detector controller 33 so as to perform radiation irradiation and readout of the radiation image signal. In response to this control signal, radiation is emitted from the radiation source 17, a radiation image obtained by photographing the breast from the + 2 ° direction is detected by the radiation image detector 15, and a radiation image signal is read by the detector controller 33. After predetermined signal processing is performed on the radiographic image signal, the radiographic image signal is stored in the radiographic image storage unit 8 b of the computer 2. It is assumed that the ultrasonic probe 21 is retracted to a position that does not affect the imaging when the radiographic image is captured.

  Next, the first radiation image signal stored in the radiation image storage unit 8b is read and output to the scanning range determination unit 8d. Then, the scanning range determination unit 8d identifies a range where the density of the mammary gland is high as described above based on the input radiation image signal, determines the range as the scanning range of the ultrasonic probe 21, and the probe controller 35. (S14).

  Next, as shown in FIG. 2, the arm controller 31 once returns the arm unit 13 to the initial position, and then outputs a control signal so as to rotate by −θ ° with respect to the direction perpendicular to the imaging table 14. That is, in the present embodiment, a control signal is output so that the arm unit 13 is rotated by −2 ° with respect to a direction perpendicular to the imaging table 14.

  Then, the arm unit 13 is rotated by −2 ° in accordance with the control signal output from the arm controller 31. During this rotation operation, the ultrasonic probe 21 is scanned and an ultrasonic image is taken (S16, S18).

  Specifically, the probe controller 35 drives the probe scanning mechanism 23 based on the input scanning range, and causes the ultrasonic probe 21 to scan the scanning range on the compression plate 18.

  Here, in the present embodiment, the ultrasonic probe 21 is scanned in the X direction, which is the same direction as the moving direction of the radiation source 17. At this time, the ultrasonic probe 21 is arranged so as to capture a tomographic image having a tomographic plane in the direction orthogonal to the moving direction of the radiation source 17, that is, the Y direction.

  Then, the ultrasonic probe 21 is controlled by the ultrasonic imaging control unit 8 c, ultrasonic waves are transmitted from the ultrasonic transducers of the ultrasonic probe 21, ultrasonic echoes are received, and ultrasonic imaging is performed from the ultrasonic probe 21. A reception signal is output to the control unit 8c. Then, in the ultrasonic imaging control unit 8c, reception focus processing is performed on the reception signal, and predetermined processing is performed to generate and store an ultrasonic image signal.

  Then, when the rotation operation of the arm unit 13 to −2 ° and the imaging of the ultrasonic image are completed as described above, the imaging of the second radiation image is performed (S20).

  Specifically, the control unit 8a outputs a control signal to the radiation source controller 32 and the detector controller 33 so as to perform radiation irradiation and radiation image reading. In response to this control signal, radiation is emitted from the radiation source 17, a radiation image obtained by imaging the breast from the −2 ° direction is detected by the radiation image detector 15, and a radiation image signal is read by the detector controller 33, After predetermined signal processing is performed, it is stored in the radiation image storage unit 8b of the computer 2.

  Then, the two radiographic image signals stored in the radiographic image storage unit 8b are read out, and the ultrasonic image signal is read out from the ultrasonic imaging control unit 8c and input to the display control unit 8e, and the display control unit 8e. Are subjected to predetermined processing and then output to the monitor 3, where a stereo image of the breast is displayed and an ultrasonic tomographic image is displayed (S22).

  In the above-described embodiment, the radiographic image capturing apparatus of the present invention is applied to a stereo image capturing apparatus. However, the present invention is not limited to this, and from a plurality of different capturing directions by moving a radiation source. Any imaging apparatus that irradiates a subject with radiation and captures a radiation image in each imaging direction by irradiation of the radiation can be applied to other imaging apparatuses. Such an imaging apparatus is applicable to, for example, tomosynthesis that generates a tomographic image of a subject using a plurality of radiographic images acquired by imaging from a plurality of imaging directions.

  In the above embodiment, the ultrasonic imaging apparatus is used as a modality other than the imaging apparatus that captures a radiographic image. However, the present invention is not limited to this, and other types of modalities may be used. For example, an ultrasonic modulation optical tomography (UOT) apparatus using ultrasonic modulation light measurement may be used.

  Moreover, although the said embodiment applies one Embodiment of the radiographic imaging apparatus of this invention to a mammography imaging display system, as a to-be-photographed object of this invention, it is not restricted to a breast, For example, a chest, a head, etc. The present invention can also be applied to a radiographic imaging display system for imaging.

DESCRIPTION OF SYMBOLS 1 Mammography imaging display system 2 Computer 3 Monitor 4 Input part 8a Control part 8b Radiation image storage part 8c Ultrasound imaging control part 8d Scan range determination part 8e Display control part 10 Mammography apparatus 13 Arm part 14 Imaging stand 15 Radiation image Detector 16 Radiation irradiation part 17 Radiation source 18 Compression plate 19 Movement mechanism 20 Support part 21 Ultrasonic probe 23 Probe scanning mechanism

Claims (11)

In a radiographic imaging method of irradiating a subject from a plurality of imaging directions different from each other by moving a radiation source, and imaging a radiographic image for each imaging direction by irradiation of the radiation,
The image is acquired by a modality for acquiring an image related to biological information of the subject other than the radiation image before the radiation source moves from a predetermined imaging direction to the next imaging direction. Radiation imaging method to do. A radiation irradiating unit configured to irradiate the subject with radiation from a plurality of different imaging directions by moving the radiation source; and a radiation image detector configured to detect a radiation image for each imaging direction by the irradiation of the radiation by the radiation irradiating unit; In a radiographic imaging apparatus comprising:
A modality for obtaining an image related to biological information of the subject other than the radiation image;
A radiographic imaging apparatus comprising: a control unit configured to control the modality to acquire the image before the radiation source moves from a predetermined imaging direction to the next imaging direction.   The radiographic imaging apparatus according to claim 2, wherein the modality acquires a tomographic image of the subject.   The radiographic image capturing apparatus according to claim 3, wherein the modality acquires an ultrasonic image of the subject by irradiating the subject with ultrasonic waves.   5. The radiographic imaging according to claim 4, wherein the modality includes an ultrasonic probe that irradiates the subject with ultrasonic waves and a scanning mechanism that scans the ultrasonic probes in a predetermined direction. apparatus.   A scanning range determining unit that determines a scanning range of the ultrasonic probe by the scanning mechanism based on a radiographic image captured by irradiating the subject with the radiation from the predetermined imaging direction; The radiographic imaging device according to claim 5.   A scanning range that accepts designation of a predetermined range in a radiographic image captured by irradiating the subject from the predetermined imaging direction and determines the range as a scanning range of the ultrasonic probe by the scanning mechanism The radiographic image capturing apparatus according to claim 5, further comprising a determination unit.   The radiographic imaging apparatus according to claim 5, wherein the scanning mechanism scans the ultrasonic probe in the same direction as the moving direction of the radiation source.   The radiographic imaging apparatus according to claim 3, wherein the modality acquires the tomographic image having a tomographic plane in a direction orthogonal to a moving direction of the radiation source. .   10. The radiation according to claim 2, wherein the radiation irradiating unit irradiates the subject with radiation from the imaging direction in which a plurality of radiographic images constituting a stereoscopic image are captured. Image shooting device. The subject is a breast;
The radiographic image capturing apparatus according to claim 2, wherein the radiographic image detector detects a breast image of the subject.